a training mission and the pilots were trying to take pictures of the majestic setting. because of the weight of the aircraft, the choppers are partially submerging before the pilots overted disaster. >> what are they doing? >> we showed the video to two navy officers, a technical aircraft controller. >> i'm not exactly sure what i that are doing. yeah, i think there is a basis for an investigation there. >> my gut reaction, why someone would want to sacrifice their career to do something off a flight plan would be totally ridiculous. that's killing the event right there. >> a spokesman said the helicopters sustained class c damage, meaning damage more than 50,000, but less than $500,000. >> a spokes person said it's not a normal training site.